Sewer-trap



L. S. FOERDERER.

SEWER TRAP.

APPLICATION FILED JUNE 21 Patented Apr. 27, 1920.

WITNESSES:

ATTORNEX LOUIS s. FOERDERER, or INDIANAPOLIS, INDIANA.

SEWER-TRAP.

Specification of Letters Patent.

Patented Apr. 27, 1920.

Application filed .Tune 21, 1917. Serial No. 176,226.

To aZZ whom it may concern Be it known that I, LOUIS S. FOERDERER, acitizen of the United States, residing at Indianapolis, in the county ofMarion and State of Indiana, have invented a new and useful Sewer-Trap,of which the following is a specification, reference being had to theaccompanying drawings and to the letters and figures of reference markedthereon.

This invention relates to an appliance for trapping and holding matteror substances that may be deposited from flowing water or other liquid,and for preventing sewer gas from passing upward through a drain pipe,the invention having reference more particularly to a trap that isespecially suitable for connection with a drain pipe from a kitchensink, wash bowl or other vessel from which liquid must be drained.

An object of the invention is to provide a sewer trap that shall be soconstructed as to be free from joints at which leaks might develop andcause annoyance and expense. Another object is to provide a trap of theabove-mentioned character which shall be so constructed as to permit theoutlet or overflow pipe to extend away horizontally at any angle thatmay be required because of interfering walls or posts, and withoutrequiring that the catch basin or vessel be composed of several partscoupled together as in common practice. A further object is to providean improved sewer trap which may be produced at the minimum cost and bestrong, reliable and economical in use.

With the above-mentioned and other objects in view, the inventionconsists in a sewer trap appliance of novel construction to permit anoverflow pipe to be connected thereto at various angles; the inventionconsisting also further in the parts and combinations and arrangementsof parts as hereinafter particularly described and further defined inthe accompanying claim.

Referring to the drawings,-Figure 1 is a fragmentary section of akitchen sink having the improved sewer trap and drain connectedtherewith; Fig. 2 is a vertical central section of the improvedappliance and pipes connected therewith; Fig. 3 is a horizontal sectionapproximately on the line IIIIII on Fig. 1; Fig. 4 is a section on theline IVIV on Fig. 2; Fig. 5 is a section of the principal part of theimproved appliance on the line VV on Fig. 2; and, Fig. 6 is a sideelevation of the improved sewer trap with a slightly modified overflowpipe.

Similar reference characters on the different figures of the drawingsindicate like parts or features of construction herein referred to.

On the drawings the numeral 1 indicates a vessel adapted to hold wateror other liquid, being in the present case intended to more particularlyindicate a kitchen sink having a drain outlet 2 with which a slip jointnipple 3 is connected.

The improved trap comprises a vessel having a cylindrical wall 4provided in tegrally in its normal lower end with a bottom 5 on theouter side of which is an integral joint ring or boss 6, the bottomhaving a screw-threaded cleaning-hole 7. A plug 8 is screwed into thecleaning-hole and has a flange 9 thereon that extends along the front ofthe joint ring, a gasket 10 usually being placed between the flange andthe joint ring to prevent leakage. One portion of the cylindrical wall 4of the vessel has an inlet-opening 11 therein with which is connected anintake box comprising a flat bottom 12, a side wall 13 and atop 14, the

intake box being cast integrally with the wall 4. The top 14 has a neckring 15 integral therewith and it has also a screwthreaded aperture 16that extends through the neck ring. The top 14 has a brace rib 17 thatis cast integrally therewith and also with the wall 4 and the neck ring15. A vertical drain pipe section 18 is secured in the neck ring 15 andslipped over the nipple 3 in practice, being provided with a packing nut19 to prevent leakage past the outside of the nipple as the water flowsthrough the pipe section 18 on its way to the catch basin or vessel. Thenormal top of the wall 4 has a head 20 therein which is cast integrallywith the wall and has an upwardly extending neck 21 cast integrallytherewith, the head having an aperture 22 therein that extends throughthe neck and in which pipe threads 23 are cut, the aperture beingslightly tapering as is customary in order to insure tight-fittingconnection with a pipe. The trap vessel is composed of cast metal so asto be durable, and the neck 21 is of such form as to permit it to beslightly expanded without liability to fracture when a pipe is screwedmore or less tightly into it.

An overflow connection is provided which comprises a receiving portion24 that has external screw threads 25 that are connected with the screwthreads 23 in the neck 21, an elbow portion 26 extending from thereceiving portion; and in some cases a pipe section portion 27 extendsfrom the elbow portion and has an elbow portion 28 to which an outletportion 29 is connected so as to be parallel with the receiving portion24 and normally extend downwardly, the outlet portion 29 having internalscrew threads into which a drain pipe 30 is screwed and may extendthrough a floor or elsewhere as may be required. When a goose-neck formof overflow connection is not .desired, the elbow portion 26 has asocket portion 81 connected therewith that has internal screw threads 32to receive a horizontal drain pipe section.

WVhen installing the improved sewer trap, the pipe section 18 may bereadily turned on the nipple 3 so as to set the trap vessel in therequired or most desirable position. In case a wall or post wouldinterfere with the swinging of the overflow pipe while connecting it tothe trap vessel, the connection is made before the pipe 18'is connectedwith the nipple 8. When screwing the receiving portion 24 of theoverflow connection into the neck 21, it may be turned more or less inthe neck, to bring the overflow connection to the required position, asillustrated by broken lines in Fig. 3. Suitable lead mixture orcomposition, as is used in common practice, is placed on the screwthreads before connection 'is made, and when the receiving portion 24 isscrewed sufficiently tight into the neck 21 to prevent leakage, it maybe further turned if necessary to bring the pipe section 27 to therequired angle,

the shape and character of the neck 21 permitting it to be slightlyexpanded by the force of the receiving portion 24. Thus the trap and theoverflow may be readily set in the mere act of making the connectionwithout loss of time and without requiring adjustments of a sectionallyconstructed trap vessel.

In practical use the water or other liquid flows into the drain pipesection 18 and thence through the inlet opening 11 to the interior ofthe trap vessel, rising to the lower portion of the section 27, throughwhich the surplus liquid flows. The liquid remaining in the vessel andconnections prevents passage of sewer gas therethrough; and sedimentaryor heavymatter or substances passing with the liquid, settle to thebottom 5 of the vessel to be removed as is customary after removing theplug 8.

Having thus described the invention, what is claimed as new is- V In asewer trap appliance comprising a shell threaded in its top portion andconstituting a vessel adapted to be connected to an overflow pipe, theside wall of the vessel being integrally continuous but having anaperture therein, the combination of an intake box comprising a fiatbottom and a flat top and also a low side portion integral with saidvessel side wall at said aperture, said bottom and top being eachbroader than the vertical width of said side portion and being longerlongitudinally than transversely, a continuous neck ring on the upperside of said flat top integral therewith to receive an intake pipe, anda narrow rib on the upper side of said flat top integral therewith andintegrally connected to the side wall of said vessel and to said neckring.

In testimony whereof I aflix my signature in presence of two witnesses.

LOUIS S. FOERDERER.

Witnesses:

E. T. Sinvius. J. H. GARDNER.

